28097616331 has 2 divisors, whose sum is σ = 28097616332. Its totient is φ = 28097616330.

The previous prime is 28097616329. The next prime is 28097616359. The reversal of 28097616331 is 13361679082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28097616331 - 2¹ = 28097616329 is a prime.

It is a super-2 number, since 2×28097616331² (a number of 22 digits) contains 22 as substring.

Together with 28097616329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28097616301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14048808165 + 14048808166.

It is an arithmetic number, because the mean of its divisors is an integer number (14048808166).

Almost surely, 2^28097616331 is an apocalyptic number.

28097616331 is a deficient number, since it is larger than the sum of its proper divisors (1).

28097616331 is an equidigital number, since it uses as much as digits as its factorization.

28097616331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 28097616331 in words is "twenty-eight billion, ninety-seven million, six hundred sixteen thousand, three hundred thirty-one".